EP3572820A1 - Agencement et procédé de mesure - Google Patents

Agencement et procédé de mesure Download PDF

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Publication number
EP3572820A1
EP3572820A1 EP18174219.8A EP18174219A EP3572820A1 EP 3572820 A1 EP3572820 A1 EP 3572820A1 EP 18174219 A EP18174219 A EP 18174219A EP 3572820 A1 EP3572820 A1 EP 3572820A1
Authority
EP
European Patent Office
Prior art keywords
antenna
reflector
measurement
radio
vertex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18174219.8A
Other languages
German (de)
English (en)
Other versions
EP3572820B1 (fr
Inventor
Adam Tankielun
Vincent Abadie
Corbett Rowell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Priority to EP18174219.8A priority Critical patent/EP3572820B1/fr
Priority to CN201811028232.2A priority patent/CN110535538B/zh
Priority to US16/203,067 priority patent/US10996252B2/en
Publication of EP3572820A1 publication Critical patent/EP3572820A1/fr
Application granted granted Critical
Publication of EP3572820B1 publication Critical patent/EP3572820B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0977—Reflective elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/103—Reflected power, e.g. return loss

Definitions

  • the present invention relates to a measurement arrangement.
  • the present invention further relates to a measurement method.
  • testing wireless communication devices may comprise analyzing the radio-frequency emissions of the wireless communication devices.
  • a communication device may not only emit wireless signals relating to one or more desired frequency or frequency range.
  • Such unwanted radio-frequency emissions may be denoted as a spurious emissions.
  • spurious emissions are discussed in the recommendations for ITU-R SM.329-7.
  • the problem addressed by the present invention is to provide a versatile and simple measurement of wireless devices.
  • the present invention solves this problem with a measurement arrangement and the measurement method with the features of the independent claims. Further embodiments are subject matter of the dependent claims.
  • a measurement arrangement for measuring radio-frequency signals comprises a reflector, a radio-frequency lens and a first antenna.
  • the reflector is adapted to focus radio-frequency signals at a predetermined vertex of the reflector.
  • the first antenna is adapted to receive radio-frequency signals and/or emit radio-frequency signals.
  • the first antenna is arranged outside the vertex of the reflector.
  • the radio-frequency lens is arranged between the vertex of the reflector and the first antenna, in particular a phase center of the first antenna.
  • a measurement method for measurement radio-frequency signals comprises a step of receiving a radio-frequency signals by a first antenna and/or emitting radio-frequency signals by the first antenna.
  • the first antenna is arranged outside a vertex of a reflector, wherein the reflector focuses radio-frequency signals at the vertex.
  • a radio-frequency lens is arranged between the vertex of the reflector and the first antenna, in particular a phase center of the first antenna.
  • the present invention is based on the fact that measuring radio-frequency signals, in particular measuring radio-frequency signals for testing a wireless device, may require both, measuring in-band signals relating to a narrow frequency band and measuring further signals, e.g. spurious emissions or the like, relating to a broad frequency range.
  • different types of antenna may be used for measuring signals relating to a narrow frequency band, and signals relating to a broad frequency range.
  • the individual antennas when measuring radio-frequency signals by a number of more than one antenna, the individual antennas have to be located at different spatial locations. Alternatively, different antennas may be subsequently arranged at a same spatial location for measuring the radio-frequency signals. Such a modification in the measurement arrangement requires a complex system for moving around all the antennas.
  • radio-frequency signals in particular radio-frequency signals at a predetermined vertex of a reflector, wherein the individual antennas may be located at different spatial positions.
  • an additional radio-frequency lens in the measurement arrangement.
  • Such a radio-frequency lens may map a vertex of the reflector to a virtual vertex at a different spatial position.
  • an additional antenna may be arranged at the respective virtual vertex provided by the radio-frequency lens.
  • the reflector may be any kind of reflector which is appropriate for reflecting radio-frequency signals.
  • the reflector may have a parabolic or a cylindrical shape.
  • any other shape of the reflector for focusing the radio-frequency waves at a predetermined vertex may be also possible.
  • the vertex may be located, for example in a center of the reflector or at a position outside the center of the reflector.
  • the radio-frequency lens may be a device which is appropriate for reflecting the electromagnetic waves of the radio-frequency signal.
  • the radio-frequency lens may have a predetermined focus.
  • the distance between the vertex of the reflector and the radio-frequency lens as well as the distance between the radio-frequency lens and the antenna, in particular the phase center of the antenna may be set up depending on the focus of the radio-frequency lens.
  • the radio-frequency lens may comprise any appropriate material for reflecting radio-frequency waves.
  • the dimensions and the shape of the radio-frequency lens may be adapted to the desired properties of the measurement arrangement.
  • the first antenna may be any type of antenna that is adequate for performing the required measurements.
  • the bandwidth of the antenna may be adapted depending on the desired measurement requirements. For example, an antenna having a narrow bandwidth of only a few kilohertz (kHz) or megahertz (MHz) may be selected for measuring in-band signals. Alternatively, an antenna having a broad bandwidth of many kilohertz, megahertz or even gigahertz may be selected for measuring broadband signals like spurious emissions. Accordingly, the type of the antenna may be selected depending on the desired measurement requirements.
  • the antenna may further comprise a connector for connecting a measurement cable or a direct connection to a measurement device.
  • the antenna in particular the phase center of the antenna may be located at a spatial position outside the vertex of the reflector.
  • the vertex of the reflector can be mapped to a virtual vertex, in particular a virtual vertex at the phase center of the antenna.
  • the antenna may measure the radio-frequency signals focused by the reflector even though the antenna is at a spatial position outside the vertex of the reflector.
  • the radio-frequency lens is adapted to over-focus a beam of the first antenna.
  • a phase center of the first antenna may be over-focused to the vertex of the reflector. In this way, a virtual vertex of the reflector is created.
  • the distance between the vertex of the reflector and the virtual focus created by means of the radio-frequency lens may depend on the focus of the radio-frequency lens.
  • the vertex of the reflector may be shifted to another spatial position and thus, the antenna may be located at a spatial position outside the vertex of the reflector.
  • the vertex of the reflector is still available, for example for further measurements by an additional radio-frequency sensor.
  • the first antenna is mounted at a fixed position with respect to the reflector.
  • the radio-frequency lens may be also mounted at a fixed position.
  • the first antenna may be located at the virtual vertex created by the radio-frequency lens. Accordingly, the radio-frequency lens and the first antenna may be mounted at fixed positions by means of a simple mounting structure. Such a fixed mounting structure can be easily realized with low manufacturing costs. Nevertheless, the vertex of the reflector is still available for further measurement purposes.
  • the measurement arrangement further comprises a mechanical positioning structure.
  • the mechanical positioning structure may be adapted to carry the first antenna. Furthermore, the mechanical positioning structure may move around the first antenna.
  • the mechanical positioning structure may be adapted to move the first antenna to the vertex of the reflector.
  • the antenna By moving the antenna to the spatial position of the vertex of the reflector, an alternative measurement may be performed without any influence of the radio-frequency lens. Hence, the flexibility of the measurement may be enhanced.
  • the reflector may be a reflector of a compact antenna test range (CATR).
  • CAR compact antenna test range
  • CATR are well-known antenna structures comprising a reflector.
  • a CATR structure with the additional radio-frequency lens for generating a virtual vertex of the reflector, a very flexible measurement arrangement can be achieved.
  • the measurement arrangement further comprises a second antenna and a movable antenna carrier.
  • the movable antenna carrier may be adapted to carry the second antenna and to move around the second antenna.
  • the second antenna may be moved to a first position such that the second antenna is located at the vertex of the reflector.
  • the second antenna may be moved to a second position such that the second antenna is located outside the vertex of the reflector.
  • a measurement of radio-frequency signals may be performed by the second antenna.
  • Such a measurement by means of the second antenna can be performed even though it is not necessary to move around the first antenna and the radio-frequency lens.
  • the radio-frequency measurement may be performed by the first antenna. In this way, a very simple configuration for alternatively measuring radio-frequency signals either by the first or by the second antenna can be achieved.
  • the movable antenna carrier and/or the mechanical positioning structure may e.g. comprise a guide or rail and a slide that carries the respective antenna.
  • the movable test antenna carrier and/or the mechanical positioning structure may also comprise a slide with wheels or simply be a mechanical holding device that is not fixed to the ground and may therefore be carried into the required position.
  • the first antenna and/or the second antenna may comprise a horn antenna.
  • Horn antennas are very appropriate antennas for measuring radio-frequency signals at a predetermined phase center.
  • any other kind of antenna for example micro strip antennas or any other kind of antenna may be also used for measuring radio-frequency signals.
  • either the first antenna or the second antenna may comprise a wideband antenna.
  • the other antenna of the first and the second antenna may comprise a narrowband antenna.
  • a configuration for measuring broadband signals and narrowband signals by means of a common measurement arrangement can be achieved.
  • a bandwidth of the first antenna is different from a bandwidth of the second antenna.
  • one of the antennas may be an antenna of a broad bandwidth and the other antenna may be an antenna of a narrow bandwidth.
  • the first and the second antenna may also be different with respect to any other radio-frequency property.
  • the first antenna and the second antenna may be adapted to perform measurement at different frequency ranges. In this way, multiple frequency ranges may be covered by the measurement arrangement.
  • the measurement arrangement may comprise a measurement processor.
  • the measurement processor may be coupled to the first antenna and the second antenna. Furthermore, the measurement processor may be adapted to perform a first measurement upon the second antenna is moved to the first position, and the measurement processor may perform a second measurement upon the second antenna is moved to the second position.
  • the measurement processor may perform a measurement based on the signals provided by the second antenna if the second antenna is located at the vertex of the reflector.
  • the measurement processor may perform a measurement based on the radio-frequency signals related to the first antenna, if the second antenna is located outside the vertex of the reflector, and thus, the radio-frequency signals are measured at the virtual vertex by means of the first antenna.
  • the measurement processor may perform measurements based on radio-frequency signals provided by different measurement antennas.
  • the measurement processor may e.g. comprise a general purpose processor with corresponding instructions. Further, the measurement processor may comprise interfacing elements that are coupled to the processor, receive the measured signals from the antennas and provide the received signals to the processor. Such interfacing elements may e.g. comprise analog to digital converters that convert the received signals into digital data that may be processed by the processor. Such dedicated analog to digital converters may e.g. be coupled to the processor via a serial or a parallel digital interface. Between the digital to analog converters and an input port analog elements, like e.g. filters comprising resistors, capacitors and inductors, or the like may be provided.
  • analog elements like e.g. filters comprising resistors, capacitors and inductors, or the like may be provided.
  • a dedicated measurement device may also be provided in a possible implementation.
  • the dedicated measurement device may be coupled to the antennas and may e.g. be a vector network analyzer, an oscilloscope or the like.
  • the measurement arrangement may comprise a measurement chamber that may accommodate the first antenna, the second and the device under test.
  • the measurement chamber may comprise a shielding or protective housing that isolates the test arrangement from any outside interference or disturbance during the measurements. It is understood that the measurement chamber may e.g. also comprise a door or sealable opening for accessing the insides of the measurement chamber, e.g. to place the device under test in the measurement chamber.
  • the measurement chamber may comprise an anechoic chamber.
  • An anechoic chamber is a measurement chamber that is designed to completely absorb reflections of electromagnetic waves.
  • the interior surfaces of the anechoic chamber may be covered with radiation absorbent material, RAM.
  • RAM is designed and shaped to absorb incident RF radiation as effectively as possible. Measurements in electromagnetic compatibility and antenna radiation patterns require that signals arising from the test setup, like e.g. reflections, are negligible to avoid the risk of causing measurement errors and ambiguities.
  • the quality of the measurements performed with the test arrangement may therefore be increased.
  • a small anechoic chamber may be sufficient to perform conformance tests because the radiating surface may be relatively small.
  • the present invention it is therefore now possible perform a measurement of spurious emissions of the device under test, for example a wireless communication device like a mobile phone, a base station, and Internet of things (IoT) device or any other wireless device.
  • a wireless communication device like a mobile phone, a base station, and Internet of things (IoT) device or any other wireless device.
  • IoT Internet of things
  • the individual antennas may be adapted to the respective measurement requirements.
  • Fig. 1 shows a block diagram of a measurement arrangement 100 according to an embodiment.
  • the measurement arrangement comprises a reflector 10, a radio-frequency lens 20 and a first antenna 30.
  • the measurement arrangement may comprise a measurement processor 50.
  • the reflector 10 of the measurement arrangement 100 may be any kind of appropriate reflector for focusing radio-frequency signals at a predetermined vertex V.
  • the reflector may have a spherical or parabolic shape.
  • the vertex V of the reflector may be located on a main axis of the reflector 10.
  • the vertex V of the reflector 10 may be located in a center of the reflector 10.
  • the vertex V is located at an off-set position, in particular an off-set position with respect to the center of the reflector 10. Accordingly, parallel radio-frequency waves may be focused by the reflector 10 at the vertex V.
  • the antenna 30 may be located outside the vertex V of the reflector 10.
  • the antenna 30 may be a horn antenna.
  • any other appropriate antenna for receiving and/or emitting radio-frequency signals may be also possible.
  • a terminal of the antenna 30 may be connected with measurement process 50. Accordingly, the radio-frequency signals received by the first antenna 30 may be provided to the measurement processor 50. Additionally or alternatively, radio-frequency signals generated by the measurement processor 50 may be emitted by the first antenna 30.
  • the radio-frequency lens 20 may be spatially located between the vertex V and the first antenna 30.
  • the arrangement of the reflector 10, the radio-frequency lens 20 and the first antenna 30 may be arranged such that the vertex V of the reflector 10 is mapped to a virtual vortex V' at the phase center of the first antenna 30.
  • the vertex V of the reflector 10 is over-focused to the phase center of the first antenna 30.
  • the first antenna 30 may measure the radio-frequency signals even though the first antenna 30 is spatially located outside the vertex V of the reflector 10.
  • the spatial position of the vertex V of the reflector 10 is still available, for example for further measurements by means of another device.
  • Fig. 2 shows a block diagram of a measurement arrangement 100 according to a further embodiment.
  • the embodiment of Fig. 2 mainly corresponds to the previous embodiment with respect to Fig. 1 .
  • the respective explanation regarding the Fig. 1 is still valid for this embodiment.
  • the embodiment of Fig. 2 differs from the previous embodiment in that the measurement arrangement according to Fig. 2 further comprises a mechanical positioning structure 35.
  • the mechanical positioning structure 35 may carry the first antenna 30. Accordingly, the first antenna 30 may be moved around by means of the mechanical positioning structure 35. In particular, the first antenna 30 may be moved away from the virtual vertex V'. For example, the first antenna 30 may be moved to the vertex V of the reflector 10. Accordingly, it may be possible to compare the measurements at the virtual vertex V' with the measurements at the vertex V.
  • a number of one or more further antennas 31 may be arranged at the mechanical positioning structure 35.
  • the mechanical positioning structure 35 may alternatively move one of the multiple antennas 30, 31 to the virtual vertex V'.
  • Fig. 3 shows a further embodiment of a measurement arrangement 100.
  • the measurement arrangement 100 of Fig. 3 mainly corresponds to the previously described measurement arrangement.
  • the description regarding to the previous embodiments also applies to the embodiment of Fig. 3 .
  • a further, second antenna may be located at the vertex V of the reflector 10.
  • the second antenna 40 may be arranged on a movable antenna carrier 45.
  • the movable antenna carrier 45 may either move the second antenna 40 to the vertex V of the reflector 10, or move the second antenna 40 to a position outside the vertex V.
  • the second antenna 40 may receive the radio-frequency signals at the vertex V of the reflector 10, or radio-frequency signals may be emitted by the second antenna 40.
  • the radio-frequency signals may be measured by means of the first antenna 30 at the position of the virtual vertex V'. In this way, it is possible to perform measurements by means of two different antennas, namely the first antenna 30 or the second antenna 40.
  • one of the first antenna 30 or the second antenna 40 may be a broadband antenna and the other antenna may be an antenna having a narrow bandwidth.
  • one or more of the characteristic properties of the antennas may be also different for the first antenna 30 and the second antenna 40.
  • the antennas may be adapted to receive radio-frequency signals relating to different frequency ranges, in particular frequency ranges which do not overlap or may only partially overlap. It is understood that any other property of the first antenna 30 and the second antenna 40 may be also adapted for appropriate measurement purposes.
  • the first antenna 30 may be a broadband antenna.
  • a broadband antenna may be used, for example for measuring spurious emissions of a device under test. Since spurious emissions may relate to a relative broad frequency range, the respective antenna may be configured accordingly.
  • the second antenna 40 may be configured for receiving and/or emitting in-band signals of a device under test. Accordingly, for this purpose, the second antenna 40 may be adapted to a relative narrow frequency range relating to the in-band signals. Thus, the in-band signals may be received/emitted with a higher efficiency due to the relative small bandwidth of the second antenna 40.
  • broadband measurements for example for measuring spurious emissions, may be performed by moving the second antenna outside the vertex V of the reflector 10.
  • the second antenna 40 may be moved to the vertex V of the reflector 10.
  • a broadband antenna as the second antenna 40 and an antenna having a small bandwidth for in-band communication as the first antenna 30.
  • the measurement arrangement in particular the reflector 10, the first antenna 30 and the radio-frequency lens 20, and if necessary the second antenna 40 may be arranged in a measurement chamber, in particular an anechoic chamber.
  • Fig. 4 shows a flow diagram of a test method for measuring radio-frequency signals.
  • the measurement method comprises a step S1 of receiving a radio-frequency signal by a first antenna 30 and/or emitting a radio-frequency signal by the first antenna 30.
  • the first antenna 30 may be arranged outside a vertex V of a reflector 10, wherein the reflector 10 focuses radio-frequency signals at the vertex V.
  • a radio-frequency lens 20 may be arranged between the vertex V of the reflector 10 and the first antenna, in particular a phase center of the first antenna 30.
  • a second antenna 40 may be used for alternatively measuring radio-frequency signals either by the first antenna 30 or the second antenna 40.
  • the second antenna 40 may be moved outside the vertex V of the reflector 10 for performing a first measurement.
  • the second antenna 40 may be moved to the vertex V of the reflector 10 for performing the second measurement.
  • the present invention relates to a measurement of radio-frequency signals by a measurement arrangement comprising a radio-frequency lens for mapping a vertex of a reflector to a virtual vertex. Accordingly, measurement of radio-frequency signals may be performed either at the vertex of the reflector or the virtual vertex generated by means of the radio-frequency lens.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP18174219.8A 2018-05-25 2018-05-25 Agencement et procédé de mesure Active EP3572820B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18174219.8A EP3572820B1 (fr) 2018-05-25 2018-05-25 Agencement et procédé de mesure
CN201811028232.2A CN110535538B (zh) 2018-05-25 2018-09-04 测量设备和测量方法
US16/203,067 US10996252B2 (en) 2018-05-25 2018-11-28 Measurement arrangement and measurement method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18174219.8A EP3572820B1 (fr) 2018-05-25 2018-05-25 Agencement et procédé de mesure

Publications (2)

Publication Number Publication Date
EP3572820A1 true EP3572820A1 (fr) 2019-11-27
EP3572820B1 EP3572820B1 (fr) 2023-03-01

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ID=62599417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18174219.8A Active EP3572820B1 (fr) 2018-05-25 2018-05-25 Agencement et procédé de mesure

Country Status (3)

Country Link
US (1) US10996252B2 (fr)
EP (1) EP3572820B1 (fr)
CN (1) CN110535538B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113533863B (zh) * 2021-06-23 2022-07-12 北京邮电大学 一种幅值扫描系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706017A (en) * 1993-04-21 1998-01-06 California Institute Of Technology Hybrid antenna including a dielectric lens and planar feed
US20080156991A1 (en) * 2005-03-21 2008-07-03 Qing Hu Real-time, continuous-wave terahertz imaging using a microbolometer focal-plane array
EP2443699A1 (fr) * 2009-06-19 2012-04-25 MBDA UK Limited Améliorations apportées à ou concernant des antennes
US20150357713A1 (en) * 2013-01-28 2015-12-10 Bae Systems Plc Directional multi-band antenna
WO2018093858A1 (fr) * 2016-11-15 2018-05-24 Ohio State Innovation Foundation Sonde radiofréquence (rf) couplée à une antenne dotée d'une pointe remplaçable

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Publication number Priority date Publication date Assignee Title
US5001494A (en) * 1989-06-19 1991-03-19 Raytheon Company Compact antenna range
CN101505006B (zh) * 2009-02-24 2012-09-26 中国航天科技集团公司第五研究院第五○四研究所 副反射器与馈源共用的馈源结构及其构成的双频段天线
CA2831325A1 (fr) * 2012-12-18 2014-06-18 Panasonic Avionics Corporation Calibrage de systeme d'antenne
EP3127188A4 (fr) * 2014-04-03 2017-11-22 Vecta Pty Ltd. Procédé et appareil de test
US20180006745A1 (en) 2016-06-30 2018-01-04 Keysight Technologies, Inc. Compact system for characterizing a device under test (dut) having integrated antenna array
US10768216B2 (en) * 2018-03-15 2020-09-08 Rohde & Schwarz Gmbh & Co. Kg Test arrangement and test method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706017A (en) * 1993-04-21 1998-01-06 California Institute Of Technology Hybrid antenna including a dielectric lens and planar feed
US20080156991A1 (en) * 2005-03-21 2008-07-03 Qing Hu Real-time, continuous-wave terahertz imaging using a microbolometer focal-plane array
EP2443699A1 (fr) * 2009-06-19 2012-04-25 MBDA UK Limited Améliorations apportées à ou concernant des antennes
US20150357713A1 (en) * 2013-01-28 2015-12-10 Bae Systems Plc Directional multi-band antenna
WO2018093858A1 (fr) * 2016-11-15 2018-05-24 Ohio State Innovation Foundation Sonde radiofréquence (rf) couplée à une antenne dotée d'une pointe remplaçable

Also Published As

Publication number Publication date
US20190361060A1 (en) 2019-11-28
EP3572820B1 (fr) 2023-03-01
US10996252B2 (en) 2021-05-04
CN110535538A (zh) 2019-12-03
CN110535538B (zh) 2022-09-23

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